Microsoft: 4 million Windows 8 licenses sold

You can love it or hate it, but sales of Windows 8 don't seem to be doing that bad as Microsoft announced yesterday that its latest operating system has sold over four million copies since its publication on Friday. The figure was revealed by Ballmer at the Build conference, and he also said Twitter is working on a Windows 8 app due to launch "in the months ahead".

Microsoft CEO Steve Ballmer announced the figure during the Build conference, which hosts 2,000 developers.

The firm hopes to convince developers to create apps for the new operating system, as well as the Windows Phone 8 mobile operating system. "In a sense, what these launches really do is the kick off the golden age of opportunity for you as developers," Ballmer said. Currently, the Windows store features 120,000 apps, while Apple's iOS and Google's Play store both boast over 700,000 apps.